Calculate the amount of Opening Trade Receivables and Closing Trade Receivables from the following information : 

Trade Receivables Turnover Ratio  = 5 times 

Cost of Revenue from operations   =  ₹8,00,000  

Gross Profit Ratio  =  20% 

Closing Trade Receivables were  ₹40,000 more than that in the beginning.  

Cash sales were 1/4 times of Credit sales.  

Marks-4, CBSE: 2024-25/Zone-4/Set-1/Q-33(b)